ETC Cancer Research Results

ETC, Electron Transport Chain: Click to Expand ⟱
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The electron transport chain (ETC) — the mitochondrial system that produces ATP through oxidative phosphorylation — is deeply linked to cancer biology, both in tumor promotion and suppression.
-The ETC resides in the inner mitochondrial membrane and includes Complexes I–IV and ATP synthase (Complex V).
-It transfers electrons from NADH/FADH₂ to oxygen, generating ATP and reactive oxygen species (ROS) as byproducts.
-The function of the tricarboxylic acid (TCA) cycle and the mitochondrial electron transport chain (ETC) is to transfer electrons from carbon to oxygen and release energy in the form of ATP.

The #1 theory of how pulsed Magnetic Fields affect the ETC is by the RPM

The ETC consists of:
-Complex I – NADH dehydrogenase
-Complex II – Succinate dehydrogenase
-➡ Complex III – Cytochrome bc₁ complex
-Complex IV – Cytochrome c oxidase
-ATP synthase (often called Complex V)

Complex III sits between Coenzyme Q (ubiquinol) and cytochrome c.

Complex III is a major regulated source of mitochondrial ROS, especially:
-Superoxide generation at the Qo site
-ROS used for redox signaling (HIF stabilization, signaling adaptation)
-Excess ROS contributes to DNA damage and cell death


Scientific Papers found: Click to Expand⟱
4572- ,    Mitochondrial electron transport chain, ROS generation and uncoupling
- Review, NA, NA
*UCPs↝, The core role of UCP2‑5 is to reduce oxidative stress under certain conditions
*ETC↝, Under physiological conditions, 0.2‑2% of the electrons in the ETC do not follow the normal transfer order but instead directly leak out of the ETC and interact with oxygen to produce superoxide or hydrogenperoxide (48,49).
*ROS↝,

4761- CoQ10,    Elevated levels of mitochondrial CoQ10 induce ROS-mediated apoptosis in pancreatic cancer
- in-vitro, PC, NA - in-vivo, PC, NA
*ETC↝, Coenzyme Q10 is a critical cofactor in the electron transport chain with complex biological functions that extend beyond mitochondrial respiration.
ROS↑, This study demonstrates that delivery of oxidized Coenzyme Q10 (ubidecarenone) to increase mitochondrial Q-pool is associated with an increase in ROS generation, effectuating anti-cancer effects in a pancreatic cancer model.
*antiOx↑, In addition to its role in ETC function, CoQ10 has phenolic antioxidant activity via its ability to undergo hydrogen abstraction by free radicals6
ROS↑, Paradoxically, CoQ10 also exhibits pro-oxidant activity that occurs either due to a CoQ10 semiquinone reaction5 or due to a reaction with oxygen when CoQ10 is in its oxidized state
OCR↓, Delivery of supraphysiologic levels of ubidecarenone via BPM31510 decreases oxygen consumption rates (OCR) in pancreatic cancer
MMP↓, Ubidecarenone enhances succinate-dependent and glycerol-3-phosphate-dependent ROS generation, mitochondrial membrane depolarization, and regulated cell death
TumCD↑,
TumCG↓, BPM31510 (25 mg/kg, b.i.d) resulted in a significant decrease in tumour growth by day 45 after inoculation compared to saline-treated mice
other↝, NOTE: this is oxidized CoQ10, not the same as CoQ10!!!!!!

5526- EP,    Nanosecond Pulsed Electric Field Modulates Electron Transport and Mitochondrial Structure and Function
- Review, Var, NA
CellMemb↑, In this work, nsPEF treatment is used to demonstrate changes that affect viability, plasma membrane permeability ROS (Reactive Oxygen Species) in the cytosol and mitochondria, and Electron Transport Chain (ETC) in cell cultures.
ROS↑, nsPEF and rotenone synergistically enhanced ROS production in intact cells suggesting that nsPEF and rotenone act at different Complex I sites.
ETC↝, A reduced cellular oxygen consumption after nsPEFs treatment indicates an alteration of the ETC at Complex I in intact and permeabilized cells as well as in isolated hepatocyte mitochondria
OCR↓,
MMP↓, collapse the mitochondrial membrane potential and cause cell death.

5519- EP,    Nanosecond Pulsed Electric Fields (nsPEFs) for Precision Intracellular Oncotherapy: Recent Advances and Emerging Directions
- Review, Var, NA
MMP↓, nsPEF bypasses plasma-membrane shielding to porate organelles, collapse mitochondrial potential, perturb ER calcium, and transiently open the nuclear envelope.
Ca+2↑,
eff↑, synergy with checkpoint blockade.
ER Stress↑, capacity to directly target organelles such as mitochondria, endoplasmic reticulum (ER),
selectivity↑, selectively ablate solid tumors, suppress metastatic spread, and prime systemic anti-tumor immunity while sparing adjacent normal tissue [7,9,10,11,12,13,14,15].
CSCs↓, Preclinical investigations have demonstrated that nsPEFs significantly reduce CSC-associated subpopulations, including CD44+/CD24− cells in breast cancer xenografts and CD133+ glioma stem-like cells
CD44↓,
CD133↓,
ROS↑, nsPEFs release Ca2+ from the ER, disrupt mitochondrial membrane potential, induce reactive oxygen species (ROS) generation, and perturb nuclear chromatin structure within nanoseconds
Imm↑, nsPEFs not only eliminate local tumor cells but also convert the tumor into an in situ vaccine, amplifying their therapeutic relevance in the era of immunotherapy
DNAdam↑, figure 2
MOMP↑, induce mitochondrial outer membrane permeabilization (MOMP)
Cyt‑c↑,
Casp9↑, Subsequent release of cytochrome c enables apoptosome assembly, caspase-9 activation, and downstream activation of caspases-3/7, culminating in cell death
Casp3↑,
Casp9↑,
TumCD↑,
Fas↑, In certain cell types, nsEP can also activate the extrinsic pathway, where Fas receptor clustering stimulates caspase-8.
UPR↑, This rapid surge triggers ER stress pathways, activates unfolded protein response (UPR) signaling, and promotes cross-talk with mitochondria through mitochondria-associated membranes (MAMs)
Dose↝, longer ns pulses (100–300 ns) generate sustained plasma membrane charging, resulting in robust Ca2+ influx, osmotic imbalance, and apoptotic priming.
Dose↝, A critical threshold of 10–20 kV/cm is generally required to initiate pore formation in malignant cells, with higher amplitudes (>30–40 kV/cm) producing more extensive permeabilization [100].
Dose↓, Low pulse counts (<100) frequently produce reversible stress responses, such as transient mitochondrial depolarization or ER Ca2+ release, without committing cells to apoptosis. I
Dose↑, In contrast, higher pulse counts (500–1000) lead to irreversible apoptosis, caspase activation, and release of DAMPs that initiate ICD [80,106].
HMGB1↓, ICD after nsPEF is characterized by surface exposure of calreticulin, extracellular ATP release, and HMGB1 emission
eff↑, The integration of nsPEFs with NP-based systems thus represents a synergistic platform where physical membrane poration and molecular targeting cooperate to maximize therapeutic efficacy.
EPR↑, demonstrates that PEF + AuNPs enhanced membrane permeabilization compared with PEF alone,
ChemoSen↑, The superior efficacy of delayed drug administration following nsPEF exposure can be attributed to transient biophysical and biochemical changes that persist after pulsing.
ETC↝, study demonstrated that nsPEFs dynamically alter trans-plasma membrane electron transport (tPMET) and mitochondrial electron transport chain activity, resulting in differential ROS generation in cancer versus non-cancer cells (Figure 9).
*AntiAge↑, Mechanistically, nsPEFs upregulated HIF-1α and SIRT1, mediators of mitochondrial retrograde signaling, thereby reversing hallmarks of aging
*Hif1a↑,
*SIRT1↑,

5524- EP,    Considerations for Exploring Nanosecond Pulsed Electric Fields (nsPEFs) for Treatments of Cancer, Benign Skin Diseases, Atrial Fibrillation, and for New Mechanistic Understandings
- Review, Var, NA
ETC↝, nonlethal nsPEFs modulation of electron transport in the plasma membrane and the mitochondria show potential for controlling redox homeostasis and metabolism.


Showing Research Papers: 1 to 5 of 5

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 5

Pathway results for Effect on Cancer / Diseased Cells:


Redox & Oxidative Stress ⓘ

ROS↑, 4,  

Mitochondria & Bioenergetics ⓘ

ETC↝, 3,   MMP↓, 3,   OCR↓, 2,  

Cell Death ⓘ

Casp3↑, 1,   Casp9↑, 2,   Cyt‑c↑, 1,   Fas↑, 1,   MOMP↑, 1,   TumCD↑, 2,  

Transcription & Epigenetics ⓘ

other↝, 1,  

Protein Folding & ER Stress ⓘ

ER Stress↑, 1,   UPR↑, 1,  

DNA Damage & Repair ⓘ

DNAdam↑, 1,  

Proliferation, Differentiation & Cell State ⓘ

CD133↓, 1,   CD44↓, 1,   CSCs↓, 1,   TumCG↓, 1,  

Migration ⓘ

Ca+2↑, 1,  

Angiogenesis & Vasculature ⓘ

EPR↑, 1,  

Barriers & Transport ⓘ

CellMemb↑, 1,  

Immune & Inflammatory Signaling ⓘ

HMGB1↓, 1,   Imm↑, 1,  

Drug Metabolism & Resistance ⓘ

ChemoSen↑, 1,   Dose↓, 1,   Dose↑, 1,   Dose↝, 2,   eff↑, 2,   selectivity↑, 1,  
Total Targets: 29

Pathway results for Effect on Normal Cells:


Redox & Oxidative Stress ⓘ

antiOx↑, 1,   ROS↝, 1,   UCPs↝, 1,  

Mitochondria & Bioenergetics ⓘ

ETC↝, 2,  

Core Metabolism/Glycolysis ⓘ

SIRT1↑, 1,  

Angiogenesis & Vasculature ⓘ

Hif1a↑, 1,  

Functional Outcomes ⓘ

AntiAge↑, 1,  
Total Targets: 7

Scientific Paper Hit Count for: ETC, Electron Transport Chain
3 Electrical Pulses
1 Coenzyme Q10
Query results interpretion may depend on "conditions" listed in the research papers.
Such Conditions may include : 
  -low or high Dose
  -format for product, such as nano of lipid formations
  -different cell line effects
  -synergies with other products 
  -if effect was for normal or cancerous cells

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